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CVE-2020-27827

Published: Mar 18, 2021Updated: Dec 3, 2025 Sources: CVE List NVD BDU csafCWE-400
7.5HIGH
NVD MITRE
EPSS Score
3.2%
Top 12.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400

Affected Products

siemens
commercial·DEaka siemens ag
simatic hmi unified comfort panels firmware
ICS / OT / IoT
simatic net cp 1243-1 firmware
ICS / OT / IoT
simatic net cp 1243-8 irc firmware
ICS / OT / IoT
simatic net cp 1542sp-1 firmware
ICS / OT / IoT
simatic net cp 1542sp-1 irc firmware
ICS / OT / IoT
simatic net cp 1543-1 firmware
ICS / OT / IoT
simatic net cp 1543sp-1 firmware
ICS / OT / IoT
simatic net cp 1545-1 firmware
ICS / OT / IoT
Red Hat Inc.
commercial·USaka redhat, red hat
openshift container platformOn-prem
Operating Systems / linux-distro
openstackOn-prem
Operating Systems / linux-distro
virtualizationOn-prem
Operating Systems / linux-distro
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
Red Hat OpenStack PlatformOn-prem
Operating Systems / linux-distro
Red Hat VirtualizationOn-prem
Operating Systems / linux-distro
Fast DatapathOn-prem
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
lldpdOn-prem
Networking Infrastructure / network-management
Open vSwitchOn-prem
Networking Infrastructure / network-management
lldpd project
oss-projectaka lldpd
lldpdOn-prem
Networking Infrastructure / network-management
openvswitch
oss-projectaka ovs
openvswitchOn-prem
Networking Infrastructure / router-switch
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
and 7 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://bugzilla.redhat.com/show_bug.cgi?id=1921438
bugzilla.redhat.com
https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html
mail.openvswitch.org
https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf
cert-portal.siemens.com
and 25 more references View all →

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